HERNANDO, C.; RIBERA, I. Two new terrestrial species of Hydraena Kugelann from the island of Bioko, Gulf of Guinea (Coleoptera: Hydraenidae). Zootaxa, Auckland, New Zealand, v. 4238, n. 2, p. 281–286, 2017. DOI: 10.11646/zootaxa.4238.2.10. Disponível em: https://www.mapress.com/zt/article/view/zootaxa.4238.2.10. Acesso em: 13 jul. 2025.